<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form th:action="@{/hahapage}" method="get">
        <input name="username"/>
        <button type="submit">一键登录</button>
    </form>
    <hr/>
    <a th:href="@{/woiam}">我是谁：  </a>
    <h1>名字：[[${msg}]] </h1>
</body>
</html>